Portable catalytic heater



FIG. 1 is a top left, front perspective view of a portable catalyticheater pursuant to my present design;

FIG. 2 is an elevational view of the left side thereof;

FIG. 3 is an elevational view of the right side thereof; and

FIG. 4 is a rear elevational view thereof.

The ornamental design for a portable catalytic heater, as shown anddescribed.